<!DOCTYPE html>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=763626
-->
<head>
<title>Test for Bug 763626</title>

<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

<script type="application/javascript">

SimpleTest.waitForExplicitFinish();

function boom()
{
  var r = document.createElement("iframe").sandbox;
  SpecialPowers.DOMWindowUtils.garbageCollect();
  is("" + r, "", "ToString should return empty string when element is gone");
  SimpleTest.finish();
}

</script>
</head>

<body onload="boom();"></body>
</html>

